package main

import "fmt"

func main() {
	fmt.Println("Hello world!" + " my son")
	var stockcode = 123
	var enddate = "2021-3-21"
	var url = fmt.Sprintf("url=%d::%s", stockcode, enddate)
	var cplex1, cplex2 complex64

	fmt.Println(url, cplex1 + cplex2)

	var test_1 = 100
	var test_2 = 100
	test_2 = test_1
	fmt.Println(test_1, test_2)
	test_1 = 101
	fmt.Println(test_1, test_2)

	var a int;
	a = 100;
	var aPtr *int
	aPtr = &a
	fmt.Println(a, *aPtr, aPtr)
	*aPtr = 101
	var str = "123123"
	fmt.Println(a, *aPtr, aPtr, len(str))


}
